/Engine/Plugins/Developer/Concert/ConcertSync/ConcertSyncCore/Source/ConcertSyncCore/Public/ConcertSyncSessionDatabase.h
Check whether the given package event ID is currently for the head revision of the package in the event.
True if the package event ID was queried successfully, false otherwise.
bool IsHeadRevisionPackageEvent ( const int64 InPackageEventId, bool & OutIsHeadRevision ) const